2. What took 5 months to design?
(a) The injection system.
(b) The fuel.
(c) The propeller.
(d) A carburator that works when the plane is upside down.

3. When did Wilbur set his 39-minute flight record?
(a) October 5th, 1902.
(b) October 5th, 1905.
(c) October 5th, 1909.
(d) October 5th, 1906.

4. What did people around Huffman Prairie begin to take notice of in late 1905?
(a) Military officials coming and going.
(b) Flying saucers.
(c) Strange accidents.
(d) Large planes flying overhead.

5. How far was the plane for the U.S. Signal Corp made by the Wright brothers supposed to fly?
(a) 200 miles.
(b) 400 miles.
(c) 125 miles.
(d) 150 miles.

6. When did the U.S. Signal Corps sign a contract with the Wright brothers?
(a) 1909.
(b) 1910.
(c) 1908.
(d) 1907.

7. How many times did Wilbur circle the Huffman Prairie during his 39-minute flight?
(a) 25 times.
(b) 53 times.
(c) 30 times.
(d) 15 times.

8. How long did the flight during the second trial last?
(a) 12 seconds.
(b) 63 seconds.
(c) 5 seconds.
(d) 119 seconds.

9. Who tried to convince the Wright brothers to fly publicly?
(a) Chanute.
(b) Bishop Wright.
(c) Langley.
(d) Katherine.

10. What did the Wright brothers build to test wings?
(a) A plane catapult.
(b) A wind tunnel.
(c) A hill.
(d) Model airplane.

11. What was the weight of the Wright brothers' largest glider after running their wing experiments?
(a) Less than 120 lbs.
(b) Less than 100 lbs.
(c) :ess than 90 lbs.
(d) Less than 80 lbs.

12. What did the Wright brothers realize concerning the data they had in Chapter 5?
(a) It was unreliable.
(b) It was very recent.
(c) It was reliable.
(d) It was old data.

13. How long after the first trial did the second trial take place?
(a) 15 days later.
(b) 6 days later.
(c) 8 days later.
(d) 12 days later.

14. What did the Wright brothers do when they returned home?
(a) Wrote a press release.
(b) Built another flyer.
(c) Took a picture of them in flight.
(d) Contacted the war department.

15. Why did the Wright brothers refuse to give their prospect what they wanted?
(a) They were afraid of people stealing their design.
(b) They didn't think it was possible.
(c) They wanted to be paid in advance.
(d) They refused to sell the exclusivity.